Sarah Vowell visits four Presidential libraries on a fact-finding tour for...President Clinton. Not that he asked her. But she wanted to offer a little advice about what should and should not be in the Presidential library he'll soon be building in Arkansas. Rejected titles for this act of our show: "Can You Direct Me to the Dick Morris Exhibit?," "The Last and Longest Press Conference," "How a Bill Becomes an Archive," "All the President's Pens," "It's the Eternity, Stupid," and "If This Library Be A Rockin, Don't Come a Knockin." (25 minutes) Government • Literature • Politics • Presidents